Buick Regal Sportback Brake Bulb Size
The Buick Regal Sportback brake light utilizes a specific H21W bulb size for the lighting system. Data for the lighting components covers the period from 2018 through 2020.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
Bulb Size by Year Range
| Years | Bulb Type | Shop |
|---|---|---|
| 2018-2020 | H21W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BAY9s base. 12V, 21W. | H21W | Check Price |